本片是一部中国香港Action片，上映于2002-03-28，由Andrew Lau Wai·Keung导演，由刘德华/关之琳/舒淇主演。
剧情简介：Andy Lau is Wesley, investigating alien existence on this earth. He works outside of the MIB-influenced FBI operation, run by Shu Qi and Roy Cheung. They're hot on the trail of the Blue-Blooded Alien (Rosamund Kwan). Two other aliens, the "Warlock Toxin Group," are gunning for her as well -- red maggoty swarming creatures that form into Mark Cheng and Almen Wong.
外文名：衛斯理：藍血人
别名：The Wesley's Mysterious File
类型：Action / Romance / Science Fiction / Thriller
地区：中国香港
导演：Andrew Lau Wai·Keung
编剧：王晶 / 陈十三 / 倪匡
演员：刘德华 / 关之琳 / 舒淇 / Thomas James Hudak Jr. / 张耀扬 / 黄佩霞 / 郑浩南 / 彭敬慈 / 龙刚 / 王晶 / 赵文卓
